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Hardware
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Arduino
ESP32
Create a fast rectangle signal on an Arduino ESP32
Date
14.04.2020
Views
407
How fast is the maximum switching frequency of an Arduino ESP32 microcontroller?
The following small code on an ESP32 microcontroller shows the generation of a direct rectangle signal on a GPIO pin
digitalWrite(13, HIGH); // Setzt den Digitalpin 13 auf HIGH = "Ein"
digitalWrite(13, LOW);
// Setzt den Digitalpin 13 auf LOW = "Aus"
ESP-WROOM-32 DevKit
Signal On/Off on GPIO Pin13 Square-Signal
The resulting rectangle signal is 100ns 100 nanoseconds.
This corresponds to an output update of 10 MHz
Code on Arduino ESP32 DevKit
void setup() {
pinMode(13, OUTPUT); // Setzt den Digitalpin 13 als Outputpin
}
void loop() {
digitalWrite(13, HIGH); // Setzt den Digitalpin 13 auf HIGH = "Ein"
//delay(1000);
// Wartet eine Sekunde
digitalWrite(13, LOW);
// Setzt den Digitalpin 13 auf LOW = "Aus"
//delay(1000);
// Wartet eine Sekunde
}
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